parkhurst



(No Model.) 2 Sheets-Sheet I.

' J. H. PARKHURST.

ENV-ELOPE.

Patented June' 9, 1891.

mncmse (VNO Model.) 2 Sheets-Sheet 2. J. H. PARKHURST.

BNVBLOPE.

No. 453,892. Patented June 9, 1891.

. leted by the postal clerk.

UNITED STATES ATnNT Fries.

ENVELOPE.

SPECIFICATION forming part of Letters Patent No. 453,892, dated June 9,1891.

Application led December 19, 1.890. Serial No. 375,282. (No model.)

To @ZZ whom t may concern.-

Be it known that I, JOHN H. PARKHURsT, a citizen of the United States,residing at Tashington city,in the District of Columbia, haveinventedcertainnewandusefullmprovements in Envelopes; and I do herebydeclare the following to be a full, clear, and eXact description of theinvention, such as will enable others skilled in the art to which 'itappertains to make and use the same.

My invention relates to an improvementin the envelope patented to meNovember 18, 1890, the Letters Patent therefor being numbered 440,650;and the nature of the same will be fully understood from the followingdescription and claims, in connection with the accompanying drawings, inWhich- Figure l is a plan View of the rectangular strip of paper as cutand gummed, from which the envelope is made. Fig. 2 is a similar View ofthe same after one fold has been made. Fig. 3 is a similar view of thesame after the secondfold. Fig. 4 is a similar view after the third foldand after the edges of the envelope are stitched, this view illustratingthe envelope as formed with a package receptacle or chamber and a pocketand ready for delivery to the post-ofce for use.Y Fig. 42% is a sectionof the envelope, as shown in Fig. 4, on the line Fig. 5 is a plan of theenvelope as it appears after the sealing-Hap has been eye- Fig. 0 is asimilar vieW to Fig. 5, showing the opposite side of the envelope; andFig. 7 a like view7 with the eyelets omitted and it being stitched atthe end. Figs. 8, 9, 10, 11, l2, and 13 shoW the envelope represented inFig. 4 as made from a strip provided with side-sustaining iiaps or wings.which fold under the sealing-flap proper in the manner illustrated inFigs. 11 and 12.

The strip of paperA (shown in Fig. l) is of rectangular form and gummedat CL and a', and it may also be gummed at the edges. To make theenvelope from this strip of paper, aportion of the paper is folded onthe line a3 over upon an intermediate portion of the strip of paper. .Atthis stage a slot ai is made through the doubled portion of the strip,and this done a little more than one-half of this slitted portion'isfolded back on the line c4, as indicated in Fig. 3, thus forming anarronT sealing-flap portion h, which extends beyond the fold a3, asplainly indicated in Fig. 45%, the extension serving for forming a flap,which servesl with the eyelet for sealing both the chamber and pocket ofthe envelope When the envelope is ready for being mailed. The foldillustrated in Fig. 3. forms apooket M for the various uses set forth inmy aforesaid Letters Patent and need not be more particularly de- 6escribed here. After the pockethas been thus formed the portion a5 of thestrip of paper is folded on the line a over upon the portions a7 and as,for the purpose of forming the letter receptacle or chamber n, asillustrated 1n 65 Figs. 4 and 42%, and thereupon the envelope isstitched through its edges, as indicated at c, which operation completesthe envelope.

I contemplate applying on the surfaces of the folded portions of thestrip of paper a 7o light cotton or other .tiexible re-enforcing fabric,as illustrated at d in Fig. 3. The sealingflap b is secured by the gumat a', the ap being folded over, as illustrated in Fig. 5, and furthersafety secured by eyeleting at f. Entrance into the pocket after theenvelope has been eyeleted is facilitated by the slit a2, and to insurecutting ona straight line on either side of this slit to the edges ofthe envelope fine perforations, as indicated at g, may be 8o provided.By this provision for getting into the pocket without breaking theeyeleted seal of the envelope great safety as Well as convenience isafforded in getting at the cards or other indices relating to the contents of the 8 5 eyelet-sealed envelope.

The envelope described may be strengthened by making it with side WingsA', and the said wings,if used, may be folded as illustrated in Fig. 11and covered by the portion 9o (t5. In all other respects the envelopeshown by the figures running from 8 to 13 will be the same as theenvelope hereinbefore described.

By my invention cheapness in the manufacture of the envelope is secured,and at the same time it is impossible when the safetystitching andeyeleting provisions are adapted to get at the valuable contents of theenvelope by steaming or moistening the edges roo and sealing-hap, and atthe same time all necessity for opening the sea.lingilap,which,oon

jointly with the eyelets, seals both the envelope-chamber n and thepocket m., in order to get access to the indicating cards orlabels 1nthe pocket is avoided, and thus a great need in the postal service issupplied.

Vhat I claim as my invention isl. The within-described postal envelope,formed with a package-receiving chamber and with a pocket made from astrip of paper or other fabric, said strip oii paper being folded on thelines as, a4, and d and forming' a scal- 1ng-ilap l), the strip of paperbeing;` `:rumlned at d and the meeting surfaces of the folded portionsbeing united iu any suitable man- 11er, preferably by stitching, andthechamber and pocket sealed in any suitable manner, preferably bythe IiapI) and eyelets, substantially as described.

2. The within-described envelope, formed with a rceeiving-ehamber and apocket, said chamber being' sealed by the llap l and both the pocket andchamber secured by eyelets, and the Said envelope provided with a slit(1,2 out of line with the means employed forsealine the Ilap,substantially asdescribed.

23. A postal envelope formed of a strip of paper folded. as ata andsecured at its edges by stitching through the folded paper,substantially as described.

l. An envelope formed of a strip of paper which is folded on lines a,(0*, and a and stitched at its long parallel edges, substantially asdescribed.

In testimony whereof I hereunto afiix my signature in presence of twowitnesses.

.TouN u. iuminnus'r.

Witnesses:

Il'. B. ZEVELY, Il. J. FTNLEY.

